/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */
package org.apache.hc.client5.http.osgi.impl;

import static org.apache.hc.client5.http.osgi.impl.HostMatcher.HostMatcherFactory.createMatcher;

import java.util.List;

import org.apache.hc.client5.http.impl.routing.DefaultRoutePlanner;
import org.apache.hc.client5.http.osgi.services.ProxyConfiguration;
import org.apache.hc.core5.http.HttpException;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.HttpRequest;
import org.apache.hc.core5.http.protocol.HttpContext;

/**
 * @since 4.3
 */
final class OSGiHttpRoutePlanner extends DefaultRoutePlanner {

    private final List<ProxyConfiguration> proxyConfigurations;

    public OSGiHttpRoutePlanner(final List<ProxyConfiguration> proxyConfigurations) {
        super(null);
        this.proxyConfigurations = proxyConfigurations;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected HttpHost determineProxy(final HttpHost target, final HttpRequest request, final HttpContext context) throws HttpException {
        HttpHost proxyHost = null;
        for (final ProxyConfiguration proxyConfiguration : proxyConfigurations) {
            if (proxyConfiguration.isEnabled()) {
                for (final String exception : proxyConfiguration.getProxyExceptions()) {
                    if (createMatcher(exception).matches(target.getHostName())) {
                        return null;
                    }
                }
                if (null == proxyHost) {
                    proxyHost = new HttpHost(proxyConfiguration.getHostname(), proxyConfiguration.getPort());
                }
            }
        }

        return proxyHost;
    }

}
